Senior Software Engineer

The Opportunity

Join Attest at a pivotal moment: we're transforming how the world's leading brands discover and act on consumer insights. As a Senior Software Engineer on the Measure squad, you'll help grow and evolve Attest Measure, our quantitative survey platform that gives brands robust, at-scale consumer research — from survey design and fielding through to dynamic analysis and storytelling. Measure's remit spans the full research journey, including how Compass, our AI co-pilot, supports survey creation and analysis within Measure.

Attest powers insights for brands like Netflix, Unilever, Nestle, and Reddit, connecting them to 150+ million consumers across 59 countries. As a Senior Software Engineer on the Measure squad, you'll work on complex challenges spanning frontend engineering, backend services, and data visualisation, shaping how leading brands make faster and more confident decisions.

This isn't just about shipping features. You'll shape technical direction within your squad, contribute scalable patterns across the stack, and mentor engineers while working cross-functionally with Product, Design, and Data Science.

This is a full stack role with a leaning towards frontend. Our frontend stack includes VueJS, Type Script, and OpenAPI; our backend stack is primarily Java (Spring Boot) and Python, with some legacy Go. We're constantly evolving how we build and deliver software, and we're increasingly looking for engineers who work in an AI-native way. What this means to us is using AI coding assistants and agentic workflows as part of their everyday development practice.

We're looking for an engineer with strong product instincts who enjoys collaborative problem-solving and values delivering meaningful impact over perfection. If you're motivated by building thoughtful user experiences and improving systems over time, we'd love to hear from you.

We are able to offer between £85,000-£95,000 depending on experience, with equity options and comprehensive benefits.

We work in a flexible hybrid model. Most squads collaborate in person around two days per week, with flexibility around which days work best. This helps us balance meaningful face-to-face collaboration with time for focused engineering work.

As a Senior Software Engineer, You Will

• Lead high-impact technical initiatives:
  Own the design and delivery of complex features across the Measure product, from survey creation and fielding to insights visualisation, spanning frontend and backend.
• Shape products from discovery to delivery:
  Partner closely with Product and Design during discovery, translating evolving requirements into pragmatic technical solutions that solve real user problems.
• Extend the Measure experience end-to-end:
  Create robust, scalable systems using VueJS and Type Script on the frontend, and Java (Spring Boot) or Python services on the backend, that handle streaming responses, dynamic visualisations, and complex state management.
• Integrate seamlessly:
  Use OpenAPI contracts to build reliable integrations across survey-building, audience, and insights services — including where Compass powers AI-assisted survey creation and analysis — handling real-time data streams and failure states robustly.
• Balance speed with sustainability:
  Ship quickly while maintaining high code quality, performance, and testability. Proactively reduce technical debt and improve system health.
• Elevate the entire team:
  Provide thoughtful code reviews, mentor other engineers through pairing, and contribute to shared patterns and standards across the Engineering organisation.
• Drive measurable outcomes:
  Focus on user outcomes, not just output, using data to inform iteration and improvement.
• Work AI-natively:
  Use AI coding assistants and agentic tools as a core part of your day-to-day workflow to build faster without sacrificing quality.

We're Looking For Someone Who

• Has strong commercial experience with VueJS (or equivalent) and Type Script, and is comfortable working across backend services in Java (Spring Boot) and/or Python, building complex applications that scale.
• Can lead technical…